Power; Key & Led - gefran eView BOX Installation And Instruction Manual

Power

The eView BOX internal cabinet control panel must be
connected to a 24 Vdc power supply unit.
The same 24 VDC power supply can feed other devices as
well. Make sure that the current issued by the power supply
is higher than the total maximum current absorbed by all the
devices connected.
+
-
230 VAC 24 VDC
Figure 16 - eViewLT power
Considering that the device has no switch, it is necessary to
install one before it, with a protective fuse.
The switch has to be positioned in the immediate vicinity of
the device and be easy for the operator to reach.
For the 24 Vdc power supply, use a separate line from that
used for electromechanical power devices such as relays,
contactors, solenoids, etc.
If there are considerable changes in the mains voltage, use a
voltage stabiliser.
Near to high frequency generators or arc welders, use
adequate grid filters.
Connect the power cables to the power connector.
Assemble the ferrite (supplied) as close as possible to the
device to limit its susceptibility to electromagnetic noise
(figure 17).
The 24 Vdc power cables must follow a separate route from
the power cables of the system or the machine.
Figure 17 - eView BOX power connection
80949_MAN_eView BOX_05-2019_ENG
Attention: make sure that the earth connection
is efficient. A non-existent or inefficient earth
connection can make the operation of the
device unstable, due to excessive environmental
disturbance.
In particular, check that:
• the voltage between ground and earth is < 1 V;
• the ohm resistance is < 6 Ω.
• the wire is as short as possible and without
curls
KEY & LED
With this RJ45 connector, the port provides a connection for
Gefran keyboards. Up to 128 keys and up to 64 LEDs can be
managed. Communication uses the USB 2.0 standard.
Connection with keyboards is straight point to point.
Maximum cable length: 5 meters.
1
2
3
4
5
6
7
8
Straight cable
Figure 18 - RJ45 wiring of keys & LEDs for Gefran
keyboards
1
2
3
4
5
6
7
8
19